Parameter Meaning
INFL. H.W SENSOR. Hot water sensor’s influence compared with the peak sensor’s at start of water heating.
Factory setting: 65%, range: 0% – 100%
TOPH SENSOR Shows the actual temperature at the top of the water heater provided that this sensor is
engaged.
HOT WATER SENSOR Shows the actual temperature approx 1/3 from the bottom of the hot water sensor.
10.3 HEATING
Parameter Meaning
INTEGRAL A1 The integral’s value (in degree minutes) for starting the heat pump. See INTEGRAL, Page 43
for more information.
Factory setting: -60 min, range: -250°min – -5°min
HEATING TIME When the heat pump must alternate between different demands for example heating, hot
water, pool heating and cooling, heating will be produced longest according to the set
number of minutes.
Factory setting: 20M, range: 5M – 40M
HYSTERESIS If the difference between the actual supply temperature and the calculated supply tempera-
ture is too great either the integral value is set to start value A1 (the heat pump starts) or the
value is set to 0 (stops the heat pump).
Factory setting: 12°C, range: 1°C – 15°C
MAX RETURN Stop temperature at high return from the heating system.
Factory setting: 55°C, range: 30°C – 70°C
START INTERVAL Minimum time interval between two heat pump starts in minutes.
Factory setting: 20M, range: 10M – 30M
OUTDOOR STOP Lowest outdoor temperature when the outdoor sensor stops the compressor and heating or
hot water are instead produced by the auxiliary heater. Operating mode that permits auxili-
ary heater must be selected.
Factory setting: -20°C, range: -20°C – -1°C
FACTOR HP Activation of room sensor function for blocking or resetting of the integral calculation.
Factory setting:
, range: – ON
RS HYST.LOW Integral calculation is blocked if the temperature of the room sensor exceeds the setpoint
value minus RS HYST.LOW.
Factory setting: 1°C, range: 0°C, 5°C – 5°C
RS HYST.HIGH Integral calculation is reset and the heat pump stops if the temperature of the room sensor
exceeds the setpoint value plus RS HYST.HIGH.
Factory setting: 1°C, range: 0°C – 5°C
Installation instructions VMGFD102 – 55
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